Creating Packages - XP or Corporate Platform?

Hi all - I wanna discuss how you all are working when capturing applications.

Are you using a Clean system?, or are you using the Corporate Platform?

My personal choise is to use the Corporate Platform (if existing).
The reason for this is that in this case you dont get all "systemcomponents" in the package, ie (MDAC, CrystalReports, DAO, and so on).

As clean as possible, preferably a down-level OS (Win2K vs XP or 2K3).
The system components are either stripped out or replaced by merge modules.

This way, we don't care whether the Corporate Image has been used, or if a system is an ad-hoc build (like administrator's station that doesn't have the bulk of the Production applications).
Besides, the standard build normally undergoes several revisions every year (legacy apps or components may be stripped out). I'd rather not update 200 applications following standard build revision...

I'm using a vanilla Virtual PC XP SP2 image to capture. When I'm done I delete the changes and can start afresh; works a treat. Working across three SOE's at the moment W2K, XP SP1 and XP SP2. The rest of the captured msi configuration and testing is done on VM's.